These guitars are known to be almost perfect. They combine the best of both worlds. You will have the tuning stability of a fixed bridge guitar, and you will have the technical possibility of a vibrato or tremolo guitar. These are considered to be the best guitars because they offer everything you need to have to stay in tune and create the best tones that are out there. These guitars are known to be played by some of the best players in the world. You can find a guitar with a locking tremolo for about 200$. That isn’t much.
One of the main advantages is that you can do practically everything with these guitars and no matter what you do, they will stay in tune. You can do drastic dive bombs or extreme pitch lowering, and they will stay in tune. You can even pull the bar up and make a squeal tone or pull the tune-up, and nothing will happen. The guitar will stay in tune. These bridges are known to be floating bridges because they can pull the pitch up and lower it down. As you can see, this is made for extreme usage, and you can be sure that these guitars are killers.
This system also has cons. If you adjust it to be a floating bridge, to have up and down movement, you will risk going out of tune if only one sting breaks. The strings are keeping the tremolo in tune and the whole guitar in tune. If one string breaks, the rest of the string will go out of tune. The second setup is to block the tremolo. This is the option if you don’t want to use the tremolo for upward motions. You can put a block inside the guitar, and then you can use it as a standard vibrato or a tremolo with the benefits of perfect tune. If the string breaks, the block will hold the tremolo from dropping down in tune. The rest of the strings will be intact.